I fixed my Wi-Fi dead zones without drilling a single hole—and it only cost $25

Most people are told never to use a Wi-Fi extender, and in most situations, that’s sound advice. Many Wi-Fi extenders cut your bandwidth in half, increase latency, can interfere with your main router’s Wi-Fi signal, can be unreliable, often have limited range, and are usually the worst way to extend Wi-Fi to dead spots in your home.